Twenty percent of baby food products are contaminated with lead, according to a report from the Environmental Defense Fund last week. The New York City-based nonprofit group also found that more than one million children ingest over the legal lead consumption limit set by the Food and Drug Administration.

Eight types of tested baby foods were found to have detectable lead in more than 40 percent of the trial's samples. Products most likely to contain lead were cookies, root vegetables and fruit juices.

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The EDF analyzed data gathered by the FDA from 2003 to 2013 as part of its Total Diet Study, a quarterly survey that tracks about 800 metals, nutrients and pesticides in food. Twenty percent of 2,164 baby food samples and 14 percent of 10,064 random food samples were found to contain lead. At least one sample in 52 of 57 types of baby food had "detectable levels of lead."

The FDA doesn't name specific manufacturers or brands in the report.

Lead exposure can negatively affect the body and is especially dangerous to young children. The naturally-occurring toxic metal can impact one's brain, liver, kidneys and bones.

Pregnant women can expose unborn child to lead, which can cause irreversible damage to developing fetuses.

There's no safe level of lead in children's blood, according to the FDA. Minor exposure can lead to lower IQs and behavioral problems.

The dangers of infant food have come under criticism in the past - a U.K.-based study in May found that fifty percent of baby rice food products contained illegal amounts of inorganic arsenic.

The findings were discovered after researchers compared arsenic levels in urine samples of breast-fed babies and formula-fed babies before and after weaning.

Exposure to arsenic can lead to developmental disorders, diabetes, anxiety, sleep disorders, nervous system damage and heart disease.